suggest replacements on "brew cask install" fail
Add JXplorer 3.3.1
Add XCA - X Certificate and key management (latest)
:fake user agent is required so sf.net will serve us the dmg
instead of the source archive or Windows exe. Minimally, this seems
to be dependent on the presence of the 'Intel OS X' string in the UA
rename `yandex-disk`, adding `.rb` file extension

This was missed in #3637, and should probably be part of audit.
Fixing checksums for VueScan cask
Merge pull request #3674 from macprince/vuescan

Fixing checksums for VueScan cask
update Colloquy to 2.4.3
Merge pull request #3675 from edwinkcw/update-colloquy

update Colloquy to 2.4.3
Colorpicker from NorthernSpy

Running as a standalone application provides a handy way to pick colors from open windows.
Merge pull request #3664 from rolandwalker/yandex_disk_extension

rename `yandex-disk`, adding `.rb` file extension
Merge pull request #3623 from nickl-/master

Add JXplorer 3.3.1
Merge pull request #3676 from dimitrismistriotis/colorpicker

Colorpicker from NorthernSpy
Add X-Mirage.app
rename yandex-disk.rb to yandexdisk.rb

in accordance with `cask_namer` and `CASK_NAMING_REFERENCE.md`
list form of `system` for jxplorer `after_install`
display artifact summary in `brew cask info`

Per discussion with @drew-gross in closed issue #3280.
Limitation: does not show link targets.
Merge pull request #3677 from tolbkni/x-mirage

Add X-Mirage.app
Merge pull request #3644 from thalweg/xca

Add XCA - X Certificate and key management (latest)
update synergy to 1.4.17
update keepassx to 2.0 series

In spite of the alpha version scheme, this is the most usable version
available, support for the previous release series was EOL'ed a long
while back and they are completely unmaintained (last patch release over
4 years ago). The 2.0 series was started 4 years ago and has been
releasing builds labeled alpha since May 2012. Anybody actually using
this software is using these builds in spite of the version labeling
scheme.